On 26 Nov 2010 00:06:27 GMT, YAPH wrote:

... Install a large heat bank with inputs from woodburner and
solar thermal and the oil boiler and decent sized immersion
heaters
as well.

Why input from the oil boiler? What does that do for you?

The heat bank would also heat the DHW, so without the wood burner or
solar providing enough energy there would be no DHW... The immersions
are for back up or possibly connection to a wind turbine. Oil is
still cheaper than electricity, just. E7 doesn't work well with
solar, unless you could get an "E7" tarrif that gave you the cheap
rate from say 1800.

--
Cheers
Dave.